Where M1 (the light blue line) = "Adult
19 to 64 at or below 138% FPL Citiz/Lawful" and 3N = "AFDC-MN-1931(b)
Non CalWORKS" (more info here: http://healthconsumer.org/cs0151931b.pdf). It would be interesting to dig deeper to understand the basis of this change (is this a true change, or just a change in definitions?).